Which optimization for x86-64

[larry]

(sorry if this is a double post, but I sent it before from the wrong 
address)

For what it's worth, I built a set of modules to cross-compile a 64bit
kernel.  It's a little dated now, the kernel is 2.6.6, but I got a
bootable 64bit kernel when I tried them.  If they work for you let me
know, I might be inspired to continue the effort.  You can download them
here:

http://lunar-linux.org/?q=node/view/282

~larry

Dennis Veatch wrote:
> On Friday 13 May 2005 10:39 am, Jon South wrote:
> 
>>Dennis Veatch wrote:
>>
>>>On Friday 13 May 2005 10:14 am, Jon South wrote:
>>>
>>>>Dennis Veatch wrote:
>>>>
>>>>>On Friday 13 May 2005 9:10 am, Moritz Heiber wrote:
>>>>>
>>>>>>On Fri, 13 May 2005 08:34:31 -0400
>>>>>>
>>>>>>Dennis Veatch <dveatch at woh.rr.com> wrote:
>>>>>>
>>>>>>>Ok, tried that and relined gcc. The lin failed before it got to the
>>>>>>>point of recompiling gcc with "badvalue (athon64) for march and mcpu".
>>>>>>
>>>>>>It should be 'Athlon64' or 'athlon64' .. not athon64.
>>>>>>
>>>>>>Regards,
>>>>>>
>>>>>>Moritz
>>>>
>>>>It should also be noted that by using those opts, it's still only going
>>>>to be 32 bit. To force compiling 64 bit requires -m64 -- but that wont
>>>>do you any good with a 32 bit kernel... At the moment, it's not worth
>>>>the effort to try and compile 64 bit apps until we get a 64 bit ISO
>>>>going for it, and even then, it will take some effort to create and to
>>>>maintain.
>>>>
>>>>-Striker
>>>
>>>Where in the optimizations would I insert "-m64"?
>>
>>Nowhere unless you really want a non-working system. 64 bit is
>>unsupported, and I have no intention of helping you break your system.
>>You need to research how 64bit is actually implemented and assess
>>whether you can actually do it on your system. There are many apps that
>>will not work in a 64bit environment; and you can't just 'jump' to 64bit
>>when your system was compiled as 32bit already.
>>
>>-Striker
> 
> 
> I'm not concerned about breaking my system, it's just a machine.
> 
> 
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